I have the seaside ones left over as backup. But I prefer the stuff from Xue vang. Reefway.org
His frag cement material is just porous enough to be easy to glue, clean and frag (even with pliers).
3D printed frag plugs are ok, but when you need to cut them, not as easy as a moderate stiff cement.
I’ve found also the 3D filament doesn’t let some corals cover as naturally (like zoas). Maybe cause it’s not porous?
3D printing makes for really great racks, stands, frag trees, shroom and nem boxes and artwork for encrusting corals.
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